<template>
  <div class="list" ref="wrapper">
    <div>
      <div class="area">
        <div class="title border-topbottom">当前城市</div>
        <div class="button-list">
          <div class="button-wrapper">
            <div class="button">{{this.currentCity}}</div>
          </div>
        </div>
      </div>
      <div class="area">
        <div class="title border-topbottom">热门城市</div>
        <div class="button-list">
          <div
            class="button-wrapper"
            v-for="item of hot"
            :key="item.id"
            @click="handleCityClick(item.name)"
          >
            <div class="button">{{item.name}}</div>
          </div>
        </div>
        <div class="area" v-for="(item,key) of cities" :key="key" :ref="key">
          <div class="title">{{key}}</div>
          <div class="item-list">
            <div
              class="item border-bottom"
              v-for="innerItem of item"
              :key="innerItem .id"
              @click="handleCityClick(innerItem.name)"
            >{{innerItem.name}}</div>
          </div>
        </div>
      </div>
    </div>
  </div>
</template>
<script>
import Bscroll from 'better-scroll'
import { mapState, mapMutations } from 'vuex'
export default {
  name: 'CityList',

  props: {
    hot: Array,
    cities: Object,
    letter: String
  },
  computed: {
    ...mapState({ currentCity: 'city' })
  },
  methods: {
    handleCityClick (city) {
      this.changeCity(city)
      this.$router.push('/')
    },
    ...mapMutations(['changeCity'])
  },
  watch: {
    letter () {
      if (this.letter) {
        const element = this.$refs[this.letter][0]
        // console.log(element)
        this.scroll.scrollToElement(element)
      }
    }
  },
  mounted () {
    this.scroll = new Bscroll(this.$refs.wrapper)
  }
}

</script>
<style lang='stylus' scoped>
@import '~styles/varibles.styl';

.border-topbottom {
  &:before {
    border-color: #ccc;
  }

  &:after {
    border-color: #ccc;
  }
}

.border-bottom {
  &:before {
    border-color: #ccc;
  }
}

.list {
  overflow: hidden;
  position: absolute;
  top: 1.67rem;
  left: 0;
  right: 0;
  bottom: 0;
  // background: red;
}

.title {
  line-height: 0.64rem;
  line-height: 0.4rem;
  background: #eeeeee;
  padding-left: 0.2rem;
  color: #666;
  font-size: 0.26rem;
}

.button-list {
  overflow: hidden;
  padding: 0.1rem 0.6rem 0.1rem 0.1rem;

  .button-wrapper {
    float: left;
    width: 33.33%;

    .button {
      margin: 0.1rem;
      padding: 0.1rem 0;
      text-align: center;
      border: 0.02rem solid #cccccc;
      border-radius: 0.06rem;
    }
  }
}

.item-list {
  .item {
    line-height: 0.44rem;
    // color: #666;
    padding-left: 0.2rem;
  }
}
</style>
